Vacuum-vaporized well

High Pressure adn Volume Compressed Air to Frack Formation 

Inflate straddle packer to about 90 psi to isolate zone of interest 

Inject air through well screen or open formation for 20 seconds at 75 psi 

Deflate packer, move it up formation or well casing and repeat process 

FIGURE 10.13 Schematic showing subsurface conditions favorable for hydrofracturing. 

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The vacuum-vaporized well technology is a proprietary process that combines vacuum extraction, bioremediation, and soil flushing to mobilize contaminants in the vadose, capillary, and saturated zones. A schematic of the double-screened well with the equipment contained within is shown in Figure 10.12. 

T0388 Hydrogen Peroxide In Situ Bioremediation—General T0398 lEG Technologies Corporation, Vacuum Vaporizer Well (UVB)... 

There are a number of engineering variations of in situ bioremediation strategies potentially applicable for soil and/or groundwater contaminated by PAHs. Recent reviews of in situ bioremediation technologies by Norris et al. (1993) provide excellent sources of references and offer case studies for myriad in situ bioremediation applications. These include bioventing vadose zone soil, biosparging saturated zone soil, vacuum-vaporized well (UVB) technology, and in situ bioreactors. 

Vacuum-vaporized well (German Unterdruck-Verdampfer-Brunnen abbreviation UVB) technology for in situ treatment of the capillary fringe, phreatic zone, and vadose zone contaminated with volatile organic compounds, including NAPLs, represents to us one of the most promising in situ bioremediation technologies (U.S. 

Borchert, S. Sick, M. (1992). The vacuum-vaporizer-well (UVB) technology for in situ groundwater remediation Brief description of technology and three case studies. In Proceedings, International Symposium on Environmental Contamination in Central and Eastern Europe, Budapest, Hungary, October 12—16, 1992. 

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